The device is an asphalt finisher, model DRF25-70C, manufactured by Redline by Dynapac. Its serial number is 10002181VMC100224, and it is equipped with a Cummins QSB 6.7-C173 engine, providing 129KW/2200 power. The manual's part number is 4812209453_B - EN, and it was published in March 2022.
Function Description:
The Dynapac DRF25-70C is a caterpillar-driven paver finisher designed for laying various materials, including bituminous mixed material, roll-down or lean-mixed concrete, track-laying ballast, and unbound mineral aggregates for foundations. Its operation is facilitated by an automatic material handling system, independent travel drives, and a clearly structured operating panel with controls.
Important Technical Specifications:
- Dimensions: The machine has a length of 6400 mm, a width of 3400 mm, and a height of 3900 mm. The minimum inlet height at the center is 555 mm, and at the outside, it is 560 mm. The hopper width, when open, is 3610 mm.
- Weights: The paver finisher without a screed weighs approximately 14.5 t. With a DRV51TVE screed, it weighs approximately 18.2 t, and with a DRV60TVE screed, it weighs approximately 18.5 t. With extension parts for maximum working width, the weight increases. With a filled hopper, an additional 15.0 t is added.
- Performance Data:
- Screed DRV51TV: Basic width (without cut-off shoes) 2.55 m, Minimum paving width (with cut-off shoe) 2.00 m, Fully variable hydraulic adjustment up to 5.10 m, Maximum paving width (with extension parts) 8.2 m.
- Screed DRV60TV: Basic width (without cut-off shoes) 3.00 m, Minimum paving width (with cut-off shoe) 2.00 m, Fully variable hydraulic adjustment up to 6.00 m, Maximum paving width (with extension parts) 9.0 m.
- Transport speed: 0 - 4 km/h.
- Operating speed: 0 - 30 m/min.
- Paving height: -150 - 310 mm.
- Max. grain size: 30 mm.
- Theoretical paving performance: 750 t/h.
- Engine: Cummins QSB 6.7-C173, water-cooled 6-cylinder diesel engine, 129 kW / 175 hp at 2200 rpm, EU 3A / Tier 3 pollutant emissions. Fuel consumption at full load is 35.1 l/h, and at 2/3 load is 23.4 l/h.
- Hydraulic System: Hydraulic pumps via distribution gear (directly flanged to the engine). Hydraulic circuits for travel drive, auger, conveyor, tamper/vibration, operating functions, fan, and separate hydraulic circuits for options.
- Electrical System: On-board voltage 24 V, 2 x 12 V, 88 Ah batteries. Optional alternator 25 kVA / 400 V.
- Temperature Ranges: Operation and storage from -5°C to +45°C.
- Material Compartment (Hopper): Capacity approx. 6.5 m³ (approx. 15.0 t). Lateral covers can be hydraulically folded in.
- Material Transfer: Two separately driven conveyors transfer material from the hopper to the augers. Transfer amount is regulated automatically by scanning filling height.
- Material Distribution: Auger diameter 380 mm. Hydrostatic external drive, fully variable. Auger halves can be switched to opposite directions. Reversible direction of rotation. Conveying volume controller is fully automatic. Auger height adjustment is mechanical. Auger extension is possible with extension parts.
- Screed Lifting Device: Functions include screed stop, screed stop with pretensioning (max. pressure 40 bar), screed charging, and screed relieving (max. pressure 40 bar). Levelling system is mechanical grade control, with optional systems for slope control.
Usage Features:
- Safety: The manual emphasizes strict adherence to safety regulations, including wearing protective equipment (goggles, head protection, hearing protection, gloves, safety shoes, close-fitting work clothing, warning vest, respiratory equipment), and observing warning signs for dangerous areas, rotating/conveying elements, electrical voltage, suspended loads, crushing, hot surfaces, falling, batteries, hazardous substances, fire, and gas bottles.
- Operation Controls: The operating panel includes controls for lights, emergency stop, engine speed adjustment, straight-ahead travel synchronization, horn, operating hours counter, fuel gauge, hopper lid control, auger and conveyor operating modes (AUTO/OFF/MANUAL), screed extension/retraction, screed stop/floating position, screed charging/relieving, vibration, tamper, levelling cylinder extension/retraction, front/rear working lights, and rotary beacon.
- Remote Control: Remote controls are available for emergency stop, horn, auger left/right operating mode, levelling cylinder extension/retraction, and screed extension/retraction.
- Paving Thickness Indicator: Two scales on the left and right sides of the vehicle allow reading the current paving thickness. The reading position can be adjusted.
- Auger Lighting (optional): Two swivelling headlights illuminate the auger compartment, activated with working lights.
- LED Working Light (optional): Two LED spotlights at the front and rear of the vehicle.
- Auger Height Adjustment: Mechanical adjustment using a ratchet lever. Current height is displayed on indicators.
- Sensor Rod / Sensor Rod Extension: Used as an orientation aid for the driver, following a reference wire or marking. Adjustable for length and angle.
- Manual Separator Fluid Spray (optional): Used to spray parts in contact with asphalt with separator emulsion.
- Separator Fluid Spraying System (optional): Sprays parts in contact with asphalt. Available with hose package or hose reeling device.
- Conveyor Limit Switches: Mechanical or ultrasonic limit switches control material flow.
- 24 volt / 12 volt sockets (optional): Sockets behind the left/right seat consoles for connecting additional working lights.
- Pressure Control Valve for Screed Charging/Relieving: Used to set pressure for additional screed charging/relieving.
- Pressure Control Valve for Paving Stop with Relieving: Used to set pressure for "Screed control with paver finisher stop - floating stop with relieving".
- Manometer for Screed Charging/Relieving: Indicates pressure for screed charging/relieving.
- Track Clearer, Mechanical (optional): Swivelling lane clearer deflects small obstacles.
- Screed Eccentric Adjustment: Allows altering the screed's approach angle for thicker layers.
- Push Roller Crossbar, Adjustable: Can be shifted to two positions for adaptation to various truck designs.
- Fire Extinguisher (optional): Located on the machine.
- Rotary Beacon (optional): Function must be checked daily.
- Fuelling Pump (optional): Not detailed in the provided text.
- Levelling/Slope Control System: Allows regulating the traction point with a defined difference to the opposite side. Actuation is electro-hydraulic, manually or automatically controlled.
- Crossbeams / Screed Lifting Device: Lifts the screed for transportation. Approach angle can be changed.
- Automatic Paving Stop and Screed Charging/Relieving: Prevents screed marks when stopping. Screed remains in floating position with relief pressure applied.
Maintenance Features:
- Maintenance Review: A comprehensive table outlines maintenance intervals for various assemblies: conveyor, auger, engine, hydraulics, drive units, electronics, lubrication points, and checking/stopping. Intervals range from 10 service hours to 20000 service hours or annually/every 2 years, or if necessary.
- General Visual Inspection: Daily checks for damaged components, leaks, fastening points, warning signs, and non-slip surfaces.
- Bolts - Torques: Regular checks and retightening of bolts and nuts. Specific torques for standard and fine metric threads are provided.
- Environmental Protection, Disposal: Guidelines for recycling and disposal of waste, lubricants, hydraulic oil, diesel fuel, coolant, and cleaning liquids.
- Engine Fuel Tank: Check filling level, fill fuel, clean tank and system.
- Engine Lube Oil System: Check oil level, fill oil, change oil, change oil filter.
- Engine Fuel System: Prefilter with water separator (drain water), main filter (replace). Bleeding the pre-filter.
- Engine Air Filter: Empty dust collector, replace air filter insert.
- Engine Cooling System: Check/top up coolant, change coolant, check/clean radiator fins, check coolant concentration.
- Engine Drive Belt: Check drive belts, replace drive belt.
- Hydraulic Oil Tank: Check oil level, fill oil, change oil, change oil filter.
- Suction/Return Flow Hydraulic Filter: Replace filter, bleed filter.
- High-Pressure Filter: Replace filter elements.
- Pump Distribution Gear: Check oil level, fill oil, change oil.
- Bleeder: Check functioning, clean if soiled.
- Hydraulic Hoses: Inspect condition, replace damaged hoses.
- Auxiliary Flow Filter: Replace filter element.
- Planetary Gear: Check oil level, fill oil, change oil.
- Screw Connections: Check tightening of gearbox mounting screws.
- Central Lubrication System: Check filling level, top up lubricant, bleed system, check pressure limiting valve, check flow of lubricant at consumers.
- Bearing Points: Lubricate hydraulic cylinder bearing points and push roller bearing points.
- Shutdowns: Procedures for shutdowns up to 6 months and from 6 months to 1 year, including protecting metal components, removing/charging batteries, changing engine oil, and sealing exhaust silencer.
- Recommissioning: Reverse shutdown steps.
- Cleaning: Clean parts in contact with paving material, spray with separator fluid, clean vehicle with water, avoid spraying electrical components, remove residual paving material.
- Cleaning Optical or Acoustic Sensors: Daily cleaning with a dry, lint-free cloth.
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